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Understanding a Published Study

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Based upon the attached article, please give me ideas to address these questions:

1. What statistical test was used in Nelson et al., (2010)?
2. Did the authors use the correct statistical test? In other words, what was their rationale for using this test (i.e., were the variables discrete or continuous and was the test appropriate for this type of data?)
3. What was the research question? How did the statistical test address and answer the research question?
4. How did the authors interpret the results of this study?

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https://brainmass.com/statistics/statistical-inference/understanding-a-published-study-576731

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Based upon the attached article, please give me ideas to address these questions:
1. What statistical test was used in Nelson et al., (2010)?
2. Did the authors use the correct statistical test? In other words, what was their rationale for using this test (i.e., were the variables discrete or continuous and was the test appropriate for this type of data?)
3. What was the research question? How did the ...

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Comments on a statistical test

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What was the purpose of the research? (Hint: In a typical research paper, this will be located in the introduction.)
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What were the conclusions of the research? (Hint: This is where the researchers conclude and discuss the results and how it supported or didn't support the research questions.)
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